Phase4 includes the following: (SegSig is already implemented, Gulden calls it SegWit.)
The transaction sizes look normal pre SegWit or is SegSig implemented into phase 4 code waiting to be released?
SegWit is not just Blocksize. Gulden implemented only the parts they seemed beneficial. It therefor is an own developed version with its own name: (I keep confusingly mixing both names).